Editor's Note: Anderson Cooper spoke with 9/11 first responder Kenny Specht and Dr. Sanjay Gupta about the news, and the multitude of health issues impacting those who were at or near Ground Zero.

Federal health authorities Monday added 58 types of cancer to the list of covered illnesses for people who were exposed to toxins at the site of the World Trade Center in the aftermath of the September 11 attacks.

The addition finalizes a recommendation from Dr. John Howard, administrator of the World Trade Center Health Program. Howard proposed in June that the program accept the recommendations of its Science/Technical Advisory Committee and add some cancers to the coverage list - 14 categories in all.

The advisory committee review called for expanded "coverage for certain types of cancer resulting from exposure to toxins released at Ground Zero."

"The publication of this final rule marks an important step in the effort to provide needed treatment and care to 9/11 responders and survivors through the WTC Health Program," Howard said in a statement Monday.